US4989513A - Method for printing test and apparatus for doing the same - Google Patents

Method for printing test and apparatus for doing the same Download PDF

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Publication number
US4989513A
US4989513A US07/221,907 US22190788A US4989513A US 4989513 A US4989513 A US 4989513A US 22190788 A US22190788 A US 22190788A US 4989513 A US4989513 A US 4989513A
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US
United States
Prior art keywords
cylinder
pressure
intaglio
printing
impression cylinder
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
US07/221,907
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English (en)
Inventor
Yukio Toda
Takeshi Nakatsuka
Toru Takahashi
Haruhito Arakawa
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DIC Corp
Original Assignee
Dainippon Ink and Chemicals Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Dainippon Ink and Chemicals Co Ltd filed Critical Dainippon Ink and Chemicals Co Ltd
Assigned to DAINIPPON INK AND CHEMICALS INC., 35-58, SAKASHITA 3-CHOME, ITABASHI-KU, TOKYO, JAPAN reassignment DAINIPPON INK AND CHEMICALS INC., 35-58, SAKASHITA 3-CHOME, ITABASHI-KU, TOKYO, JAPAN ASSIGNMENT OF ASSIGNORS INTEREST. Assignors: ARAKAWA, HARUHITO, NAKATSUKA, TAKESHI, TAKAHASHI, TORU, TODA, YUKIO
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F3/00—Cylinder presses, i.e. presses essentially comprising at least one cylinder co-operating with at least one flat type-bed
    • B41F3/18—Cylinder presses, i.e. presses essentially comprising at least one cylinder co-operating with at least one flat type-bed of special construction or for particular purposes
    • B41F3/28—Proof-print presses for relief printing, lithography or intaglio printing, i.e. presses for checking accuracy of printing surfaces

Definitions

  • the present invention relates to a method for high accuracy printing test for gravure printing and an apparatus for doing the same.
  • the impression quality of printed matters depends upon various factors, but among others, the tint or nuance of inks used in the printing is an extremely important factor.
  • a desired ink is prepared by mixing several kinds of standard-color ink. Namely, it is necessary to attain a color matching.
  • this color matching has been done by repeating the preparation of comparison ink samples by knifing using ink mixtures and visually comparing the knifed ink samples with the color samples.
  • the printing pressure of the impression cylinder and the pressure of the doctor blade are adjusted by means of adjusting screws, respectively. So after replacement of the intaglio, impression cylinder and the doctor blade, it is difficult to meet the same requirements which have been met before that replacement, and it is not possible to provide a test printing or proofing of a high reproducibility and precision.
  • the present invention has an object to overcome the above-mentioned drawbacks of the conventional techniques by providing a printing testing apparatus capable of moving the intaglio mount and head (impression cylinder) at a desired speed at any time, that is, capable of always providing for a desired printing speed; incurring neither failure of the drive nor deterioration of accuracy even if used repeatedly for a long period; usable by a method for printing test which ensures always an appropriate printing pressure and contact pressure of doctor blade and in a stable state for a long period; having an excellent reproducibility; easy to maintain and care; and not expensive.
  • the aforementioned problems are solved by adjusting the movement and moving speed of the intaglio mount or head (impression cylinder) by a pneumatic cylinder connected to a compressor and a pressure adjusting means, and applying and adjusting the printing pressure of the impression cylinder and the contact pressure of the doctor blade by a pressure cylinder, such as a pneumatic or hydraulic cylinder, and a pressure adjusting means.
  • the moving speed of the piston within the pneumatic cylinder for moving the intaglio mount or head is in proportion to a magnitude per a unit area of the air pressure acting upon the piston, if the friction resistance and inertia of each part are ignored. Therefore, by adjusting, by the throttle valve, etc., the air pressure supplied to the pneumatic cylinder, it is possible to freely adjust the moving speed, namely, the printing speed, of the intaglio mount or head (impression cylinder) connected to the piston rod.
  • the moving stroke (travel) of 20 to 40 cm is sufficient.
  • the aforementioned pneumatic cylinder should desirably be of a following type. Namely, when moving the intaglio mount or head for a printing process, a compressed air sufficient enough to provide any desired printing speed is supplied to the aforementioned intaglio cylinder through a main pipe. To reduce the speed of the intaglio mount or head and finally stop it after a printing is completed, the supply of the compressed air through the main pipe is stopped and a compressed air nearly equal in pressure to the compressed air from the main pipe is immediately supplied from a sub pipe connected to an opposite side of the main pipe with respect to the piston of the aforementioned pneumatic cylinder located between the main and sub pipes, thereby slowing down the motion of the piston. Further, the pneumatic cylinder should preferably be a double-acting cylinder permitting, after one printing process is over, to return, for a next printing, the intaglio mount or head to their initial positions at a speed slower than the speed in the printing process.
  • a solenoid valve is used in the fluid passage along the pipe and it is automatically controlled by electric signals.
  • the pressure cylinder for imparting a printing pressure and the pressure cylinder for imparting a contact pressure of the doctor blade are not limited to any special types but any pressure cylinders may be used.
  • a double-acting cylinder is employed which uses a compressed air or hydraulic pressure for both the forward and reverse movements.
  • a single-acting cylinder can be employed which uses a spring for a return movement, since the doctor blade is lightweight.
  • FIG. 1 is a perspective view of one embodiment of the printing testing apparatus according to the present invention.
  • FIG. 2 shows the passage of compressed air in the apparatus in FIG. 1;
  • FIG. 3 is an explanatory drawing of the function of the pneumatic cylinders for movement of the intaglio
  • FIG. 4 is a perspective view showing the mechanism for moving and stopping the intaglio mount
  • FIG. 5 is a side elevation of the head
  • FIG. 6 shows the doctor blade and its fixture.
  • FIG. 7 is a schematic view of a second embodiment of the present invention.
  • FIG. 1 is a perspective view of a printing testing apparatus according to one embodiment of the present invention.
  • This apparatus is such a type that the impression cylinder is rotated at a fixed position while the intaglio mount is moved.
  • FIG. 2 shows the compressed air passage in the apparatus shown in FIG. 1.
  • the intaglio mount is moved by the pneumatic cylinder and the printing pressure of the impression cylinder and the contact pressure of the doctor blade are also adjusted by pneumatic cylinders, respectively.
  • the apparatus includes a main body comprising a base 1, wall-like guides 2 standing on the base 1, opposing each other and each having a guide rail inside thereof, a movable intaglio mount 3 supported on the guides 2 and having an intaglio 4 (170 mm in width and 370 mm in length) on the surface thereof, a pair of heads 6 fixed on the base 1 outside the guides 2, a freely rotatable impression cylinder 8 provided in bearings 7 provided slidably in vertical direction inside the heads 6, a double-acting pneumatic cylinder 9 to move the intaglio mount 3 (of 300 mm in maximum stroke), double-acting pneumatic cylinders 11 for imparting a printing pressure between the impression cylinder 8 and intaglio 4, and having cylinder tubes fixed to tops of the heads 6 and piston rods 10 connected to the bearings 7, a doctor blade 12 for supplying an ink dropped onto the intaglio to a printing area 5 on the
  • valve control knobs 31, 32 and 33 to adjust the pressure of the compressed air from the compressor 50 to each of the pneumatic cylinders 9, 11 and 14, pressure gauges 34, 35 and 36, operation select pushbutton switches 41, 42 and 43, a control box 30 having a printing speed meter 44, etc. mounted thereon and incorporating control devices, a limit switch 45 for a stopper for position detection of the intaglio, a photo sensor 46 for detection of printing speed, a light shielding plate 47, solenoid valves 37, 38 and 39 for opening/closing compressed air passages, and etc.
  • FIG. 3 shows the relation between the pneumatic cylinder 9 and compressed air controlling means.
  • FIG. 4 is a perspective view of a mechanism to move and stop the intaglio mount 3
  • FIG. 5 is a side elevation of the head 6
  • FIG. 6 is a partial perspective view of the fixture for the doctor blade 12.
  • the intaglio mount 3 When the piston P has moved to the position P', the intaglio mount 3 is also moved to the position 3'. At this time, the limit switch 45 for position detection of the intaglio mount is activated, and the three-way solenoid valve 37 is closed with a signal from the limit switch 45 through the electric circuit. Upon the supply of compressed air to the pneumatic cylinder 9 is stopped, the three-way solenoid valve 37 is opened by the timer T for a short time of less than 1 sec and supplies a compressed air for braking the piston P. Thereafter the intaglio mount 3 is moved somewhat, and then it is completely stopped by a stopper 48. At this time, the three-way solenoid valves 37 and 37' may be opened to the atmosphere or kept as closed.
  • FIG. 4 shows in detail the limit switch 45, stopper 48 and the guide 2.
  • the limit switch 45 is adjustably installed to a guide bar 51 with a fixture, in such a manner that the switch is adjusted in an appropriate position according to a printing speed.
  • the stopper 48 has in its body 49 a spring or pneumatic damper (not shown) which absorbs the impact when the stopper 48 collides with a stopper 48' on the intaglio mount.
  • the head 6 comprises frames 61, 62, 63, 64, and etc. fixed to the base 1, and a bearing block 7 is mounted between the frames 62 and 63.
  • the bearing block 7 has on the lateral sides thereof ribs (not shown) fitted in recesses 52, respectively, in the frames 63.
  • the bearing block 7 is thus vertically slidable along the recesses 52.
  • the frame 64 has fixed thereon the tube of the pneumatic cylinder 11 and the piston rod 10 is connected to the aforementioned bearing 7.
  • the head 6 has installed thereon the doctor blade 12 which is supported by two rod-like supports 13 and 13' as shown in FIGS. 5 and 6.
  • the support 13 is connected to the slide block 15 vertically slidable by the piston rod 14' of the pneumatic cylinder 14, while the support 13' is connected to the support 13 by means of a connecting bar 13".
  • the doctor blade 12 has the angle adjusted by means of a knob 54 provided at the end of the support 13'.
  • the pneumatic cylinder 14 is of a double-acting type.
  • a pressure of contact with the intaglio is generated by lowering the doctor blade 12 and when the doctor blade 12 is separated from the intaglio, a compressed air is supplied to the pneumatic cylinder 14 to drive the piston in the opposite directions. It is desired that, when lowering the doctor blade 12, the compressed air is supplied at two steps by a needle valve to the pneumatic cylinder 14, thereby avoiding any abrupt contact between the doctor blade 12 and intaglio.
  • the spring 53 serves to absorb the impact of the doctor blade 12 at its stroke end.
  • the embodiment of a printing testing apparatus according to the present invention of a type in which the intaglio is moved has been described.
  • the printing testing apparatus of a type in which the head is moved is basically the same as the intaglio-moving type except the pneumatic cylinder 9 is attached to the head 6.
  • the compressor 50 is put into operation, and the throttle valve 31 is adjusted while watching the pressure gauge 34 to supply the pneumatic cylinder 9 with a compressed air matching to a desired printing speed. Similarly, for a necessary printing pressure and contact pressure of the doctor blade, the throttle valves 32 and 33 are adjusted while watching the pressure gauges 35 and 36, respectively.
  • the reverse button 43' (FIG. 1) is pressed to return the intaglio mount 3 to its initial position, and the intaglio is cleaned by using a solvent and waste. Also the doctor blade 12 is opened upward, cleaned and returned to its initial position.
  • the printing speed can be adjusted by means of the throttle valve 31 and pressure gauge 34 based on the index line prepared beforehand.
  • a real printing speed can be measured by the photo sensor 46 and light shield plate 47 shown in FIG. 1.
  • a calculator in the control box can calculate a time for which the light received by the photo sensor 46 is intercepted by the light shielding plate 47, and the calculated value can be digitally indicated like "80 m/min" in a meter 44 on the control box.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Rotary Presses (AREA)
  • Inking, Control Or Cleaning Of Printing Machines (AREA)
US07/221,907 1986-10-07 1987-10-07 Method for printing test and apparatus for doing the same Expired - Fee Related US4989513A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP61237115A JPS6391246A (ja) 1986-10-07 1986-10-07 印刷試験法並びに印刷試験装置
JP61-237115 1986-10-07

Publications (1)

Publication Number Publication Date
US4989513A true US4989513A (en) 1991-02-05

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Family Applications (1)

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US07/221,907 Expired - Fee Related US4989513A (en) 1986-10-07 1987-10-07 Method for printing test and apparatus for doing the same

Country Status (5)

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US (1) US4989513A (enrdf_load_html_response)
JP (1) JPS6391246A (enrdf_load_html_response)
DE (1) DE3790620T1 (enrdf_load_html_response)
GB (1) GB2204279B (enrdf_load_html_response)
WO (1) WO1988002696A1 (enrdf_load_html_response)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5158018A (en) * 1990-04-27 1992-10-27 Nissha Printing Co., Ltd. Thin film forming apparatus
US20050001876A1 (en) * 2003-06-04 2005-01-06 Canon Kabushiki Kaisha Carriage drive control method and printing apparatus which adopts the method
US20050243154A1 (en) * 2001-08-15 2005-11-03 Integrity Engineering, Inc. Ink proofer
US20050241504A1 (en) * 2001-08-15 2005-11-03 Westby Ronald K Ink proofer apparatus and system
US20060102029A1 (en) * 2004-10-28 2006-05-18 Westby Ronald K Ink proofer apparatus and system
US20070284780A1 (en) * 2006-06-07 2007-12-13 Hyundai Motor Company Transfer press apparatus and method for controlling the same
US20080264286A1 (en) * 2007-04-24 2008-10-30 Westby Ronald K Offset hand proofer tool
US20100005984A1 (en) * 2005-05-10 2010-01-14 Westby Ronald K Hand proofer tool
US8973497B2 (en) 2007-04-24 2015-03-10 Probity Engineering, Llc Flexographic proofing tools and methods

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1277071B1 (it) * 1995-12-13 1997-11-04 Enrica Somenzi Apparecchiatura di stampa di prova del colore in particolare per la stamperia tessile

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5013113A (enrdf_load_html_response) * 1973-06-05 1975-02-12
US4558643A (en) * 1984-03-09 1985-12-17 Kurashiki Boseki Kabushiki Kaisha Proof-printing machine
US4706565A (en) * 1986-05-27 1987-11-17 John Martin Multi-color engraving system

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS53128408A (en) * 1977-04-15 1978-11-09 Toppan Printing Co Ltd Lithographic multicolor copperplate printer
US4417513A (en) * 1982-09-17 1983-11-29 Corning Glass Works Printing apparatus and method
JPS6129544A (ja) * 1984-07-20 1986-02-10 Toppan Printing Co Ltd グラビア印刷法

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5013113A (enrdf_load_html_response) * 1973-06-05 1975-02-12
US4558643A (en) * 1984-03-09 1985-12-17 Kurashiki Boseki Kabushiki Kaisha Proof-printing machine
US4706565A (en) * 1986-05-27 1987-11-17 John Martin Multi-color engraving system

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5158018A (en) * 1990-04-27 1992-10-27 Nissha Printing Co., Ltd. Thin film forming apparatus
US7281473B2 (en) 2001-08-15 2007-10-16 Integrity Engineering, Inc. Ink proofer arrangement including movable ink proofer tool holder
US7316182B2 (en) 2001-08-15 2008-01-08 Integrity Engineering, Inc. Ink proofer arrangement including light source for curing ink
US20050241504A1 (en) * 2001-08-15 2005-11-03 Westby Ronald K Ink proofer apparatus and system
US20050243154A1 (en) * 2001-08-15 2005-11-03 Integrity Engineering, Inc. Ink proofer
US7944582B2 (en) * 2003-06-04 2011-05-17 Canon Kabushiki Kaisha Carriage drive control method and printing apparatus which adopts the method
US20050001876A1 (en) * 2003-06-04 2005-01-06 Canon Kabushiki Kaisha Carriage drive control method and printing apparatus which adopts the method
US7275482B2 (en) 2004-10-28 2007-10-02 Integrity Engineering, Inc. Ink proofer arrangement including substrate roll support and tensioner and method of using
US20060102029A1 (en) * 2004-10-28 2006-05-18 Westby Ronald K Ink proofer apparatus and system
US20100005984A1 (en) * 2005-05-10 2010-01-14 Westby Ronald K Hand proofer tool
US8539880B2 (en) 2005-05-10 2013-09-24 Probity Engineering, Llc Hand proofer tool
US20070284780A1 (en) * 2006-06-07 2007-12-13 Hyundai Motor Company Transfer press apparatus and method for controlling the same
US20080264286A1 (en) * 2007-04-24 2008-10-30 Westby Ronald K Offset hand proofer tool
US8720335B2 (en) 2007-04-24 2014-05-13 Probity Engineering, Llc Offset hand proofer tool
US8973497B2 (en) 2007-04-24 2015-03-10 Probity Engineering, Llc Flexographic proofing tools and methods

Also Published As

Publication number Publication date
JPH0423916B2 (enrdf_load_html_response) 1992-04-23
GB2204279B (en) 1991-03-27
DE3790620T1 (enrdf_load_html_response) 1988-09-15
GB2204279A (en) 1988-11-09
WO1988002696A1 (en) 1988-04-21
JPS6391246A (ja) 1988-04-21
GB8813007D0 (en) 1988-08-03

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AS Assignment

Owner name: DAINIPPON INK AND CHEMICALS INC., 35-58, SAKASHITA

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNORS:TODA, YUKIO;NAKATSUKA, TAKESHI;TAKAHASHI, TORU;AND OTHERS;REEL/FRAME:004935/0189

Effective date: 19880526

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Effective date: 19950208

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